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Climate change. Changes in surface air temperature over the past 50 years. [ 1] The Arctic has warmed the most, and temperatures on land have generally increased more than sea surface temperatures. Earth's average surface air temperature has increased almost 1.5 °C (about 2.5 °F) since the Industrial Revolution.
The history of the scientific discovery of climate change began in the early 19th century when ice ages and other natural changes in paleoclimate were first suspected and the natural greenhouse effect was first identified. In the late 19th century, scientists first argued that human emissions of greenhouse gases could change Earth's energy ...
A 2019 review of scientific papers found the consensus on the cause of climate change to be at 100%, [ 6] and a 2021 study concluded that over 99% of scientific papers agree on the human cause of climate change. [ 7] The small percentage of papers that disagreed with the consensus often contained errors or could not be replicated.
Effects of climate change are well documented and growing for Earth's natural environment and human societies. Changes to the climate system include an overall warming trend, changes to precipitation patterns, and more extreme weather. As the climate changes it impacts the natural environment with effects such as more intense forest fires ...
Climate change has led to the United States warming by 2.6 °F (1.4 °C) since 1970. [ 3] The climate of the United States is shifting in ways that are widespread and varied between regions. [ 4][ 5] From 2010 to 2019, the United States experienced its hottest decade on record. [ 6]
The list of climate change controversies (or list of global warming controversies) concerns past or present public debates over certain aspects of climate change: whether it is occurring ( climate change deniers dispute this), how much has occurred in modern times, what has caused it, what its effects will be, whether action should be taken to ...
Examples of the effects of climate change on agriculture: 2019 flooding of Toki River caused by Typhoon Hagibis, which was exacerbated by climate change; [ 1] increase in global leaf area primarily caused by the CO2 fertilization effect; [ 2] 2020–2023 Horn of Africa drought, the worst drought on record and made worse due to the effects of ...
This has led to increases in mean global temperature, or global warming. The likely range of human-induced surface-level air warming by 2010–2019 compared to levels in 1850–1900 is 0.8 °C to 1.3 °C, with a best estimate of 1.07 °C. This is close to the observed overall warming during that time of 0.9 °C to 1.2 °C.